Multiple realities(covers information from several alternate timelines)
Ensign Doug Bronowski was a member of the crew of USS Voyager while that starship was stranded in the Delta Quadrant. His Starfleet service number was KH-128-0409-JVD.
In 2371, he was a crewmember on the Voyager and he was transported onto the Caretaker's array before finding the Maquis. (VOY: "Caretaker")
He was captured in Seska's variation of the program, along with the rest of Starfleet crew, for not belonging to the Maquis. (VOY: "Worst Case Scenario")
Despite being in the command division, Ensign Bronowski pulled some duty shifts in the airponics bay by 2375. He had a flawless record, for this reason he was Seven of Nine's first choice for a first date. Harry Kim found Bronowski to have no sense of humor and to play the accordion badly. Doug did not get the date in the end as Seven decided to go on her first date with Lieutenant William Chapman. (VOY: "Someone to Watch Over Me")
In an alternate timeline, Bronowski was aboard USS Voyager just before the search for the Maquis. (VOY: "Shattered")
Bronowski was seen only in a photograph, where he was "played" by uncredited regular background extra Kerry Hoyt, who also appeared as Fitzpatrick and Grimes.